/* 3D展览馆容器样式 */
.exhibition-3d-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #000;
  z-index: 1000;
  overflow: hidden;
}

/* 加载界面样式 */
.exhibition-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
  z-index: 1001;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top: 3px solid #4a9eff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.exhibition-loading p {
  font-size: 18px;
  margin: 0;
  color: #ccc;
}

/* 操作说明样式 */
.exhibition-instructions {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.9);
  color: white;
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  z-index: 1001;
  border: 2px solid #4a9eff;
  box-shadow: 0 0 30px rgba(74, 158, 255, 0.5);
}

.exhibition-instructions h3 {
  margin: 0 0 20px 0;
  color: #4a9eff;
  font-size: 24px;
}

.exhibition-instructions p {
  margin: 10px 0;
  font-size: 16px;
  color: #ccc;
}

.exhibition-instructions button {
  background: linear-gradient(135deg, #4a9eff 0%, #6bb6ff 100%);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 25px;
  font-size: 16px;
  cursor: pointer;
  margin-top: 20px;
  transition: all 0.3s ease;
}

.exhibition-instructions button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(74, 158, 255, 0.4);
}

/* 退出按钮样式 */
.exhibition-exit-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 10px 20px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
  z-index: 1001;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.exhibition-exit-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .exhibition-instructions {
    padding: 20px;
    margin: 20px;
    width: calc(100% - 40px);
  }
  
  .exhibition-instructions h3 {
    font-size: 20px;
  }
  
  .exhibition-instructions p {
    font-size: 14px;
  }
  
  .exhibition-exit-btn {
    top: 10px;
    right: 10px;
    padding: 8px 16px;
    font-size: 12px;
  }
}

